#交易类型入门 transaction types are mainly divided into spot trading, futures trading, and options trading. Spot trading is "payment upon delivery," where both parties complete the money and goods exchange instantly; futures trading involves contracts that agree to trade at a predetermined price at a specific time in the future; options trading grants the buyer the right to buy or sell assets at an agreed price within a specified period, while the seller must fulfill the obligation. The risk and return characteristics of the three differ.